Denyl

@NunoLava1998 mentioned in your other thread that KCAS was no good.
 
In general, don't "upgrade" your power supply unless it's to something decent, and only if you actually need to.

I think a few things might need to be cleared up. When everyone is talking about SATA 3 they're talking about the signalling standard, not the physical number of the port. A Sata 2 (or SATA II) connector is rated for speeds of 300mbps while a SATA 3 (SATA III) connector is rated for 600mbps. A 300mbps connection will bottleneck most SSDs.
 
First I'd recommend you download https://crystalmark.info/en/software/crystaldiskinfo/ (from the same people who make Crystal Disk Mark). It will show you the drive health but more importantly it will let you determine the type of connection. You'll see a box labeled "Transfer Mode". What you want to see is SATA/600 written twice, meaning both the drive and the port it's plugged into are capable of full speed.
 
So this is what it will look like if the port is SATA III and the drive can run at full speed:

 
And this is if the port is SATA II so the drive can only run at half speed:

 
From your description and some information I've gleaned it seems likely that the SATA port you've plugged into is SATA II. If Crystal Disk confirms this I'd suggest you try plugging the drive into the very first SATA port, SATA0 which I think is blue on that board and the one closest to the edge. From the chipset that port is probably SATA III. Confirm that it's running at SATA III speeds in Crystal Disk and rerun your benchmark.
 
Once you know the SATA port isn't bottlenecking the drive you can also run https://www.userbenchmark.com/. This will not only benchmark the drive but it will also give you a comparison to other benchmarks of the same drive. You'll want to see a green checkmark saying the drive is performing as expected or performing above expectations. If you see a red mark like below telling you the drive is performing below expectations (on a brand new drive) then you may want to RMA it.
 

 
Now finally there is just the issue of the drive itself. It's a DRAM-less SSD which means the performance isn't going to be great. That being said your benchmarks seem to be below what I'd expect from even that type of drive (the Seq results are what I'd expect from a drive being bottlenecked by a SATA II port and the 4k-64Thrd number is a bit worrying)